Improvement in door-bells



Jr B. RICHARD. Door-Bell.`

No. 222,307. Patented Dec. 2, 1879.

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N. PETERS. PHQTO-UTHOGRAPHER. WASHINGTON. D cv released.

UNITED STATES JOSEPH B. RIO-HARD,

PATE-NT OFFICE.

OF COLUMBUS, OHIO.

IMPROVEM EN'l IN' DOOR-BELLS.

Specilcation forming part of Letters Patent No. 222,307, dated December 2, 1879; application iled i October 8,1879. f

represents a view of the gong, a part being broken oi' to show the actuating mechanism. Fig. 2 is a cross-section on the line m w.

LSimilar letters ot'- reference indicate ccrrespending parts. a

A represents a door provided with a spindle-case, B, through which the spindle C, attached to the bell-knob D, passes. To the, other end of the spindle C a curved lever, E, is pivoted, which is provided with a pressurespring, F,is guided bya staple, Gr, and glides with its forward end on the incline H on the 4.plate I. A spiral spring, J, resting against the pin K and rthe plate I, embraces the spindleand draws the same back to its original position as soonas the strain on the knob is A lever, L, having a ridge, l', at the short end and a hammer, M,'attached to the long end, is pivoted to the plateI by the pin N. A spring, O, secured by-the pin P to the plate I, and coiled around thestem Q, rests against the lower end ot' the lever L. A gong, R, which covers all the mechanism, is fastened to the end of the stem Q by the nut S.-

The operation is as follows: When the knob D is drawn in the direction of the arrow a', the end c of the lever E will have a tendency to rise; but as the spring F presses it onto the incline H it will move in the direction of the arrow b', and will move the short arm of the lever L in the same direction, and will raise the hammer M and overcome the pressure of the spring O. As the end e of the lever E is curved, and as it glides up an incline, it will continually rise, and when it has moved the leverL in the direction of b a certain distance it Will rise higher than the ridge l', and will lose its hold on the lever L. The spring O will force L back to its form'er position and cause the hammer to strike the gong.

r Havingthus described myinvention, I claim as new and desire to secure by Lettersr Patentl. The lever E, pivoted to end of k'noblspindle and provided with pressurespring F, in combination with the guide G and incline H, as.and for the purpose specied. c Y

2. The combination of the spindle C, the curved lever E, the incline H, and the lever L, provided with a ridge, l', substantially as herein shown and described, and for the purpose set forth,

JosEPE B. RICHARD.

Witnesses:

THos. S. GATES,

WILLIAM FUnNIss. 

